[dpdk-stable] [PATCH] net/mlx5: fix un-supported RSS hash fields use
Nelio Laranjeiro
nelio.laranjeiro at 6wind.com
Wed Jan 3 10:14:19 CET 2018
MLX5 NIC does not support all hash fields, this patch limit by refusing
impossible RSS combination to avoid errors.
Fixes: 2f97422e7759 ("mlx5: support RSS hash update and get")
Cc: stable at dpdk.org
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
Acked-by: Yongseok Koh <yskoh at mellanox.com>
---
drivers/net/mlx5/mlx5_defs.h | 5 +++++
drivers/net/mlx5/mlx5_flow.c | 11 +++++++++--
drivers/net/mlx5/mlx5_rss.c | 5 +++++
3 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_defs.h b/drivers/net/mlx5/mlx5_defs.h
index 3a7706cfd..64bb0712e 100644
--- a/drivers/net/mlx5/mlx5_defs.h
+++ b/drivers/net/mlx5/mlx5_defs.h
@@ -34,6 +34,8 @@
#ifndef RTE_PMD_MLX5_DEFS_H_
#define RTE_PMD_MLX5_DEFS_H_
+#include <rte_ethdev.h>
+
#include "mlx5_autoconf.h"
/* Reported driver name. */
@@ -105,4 +107,7 @@
/* Number of packets vectorized Rx can simultaneously process in a loop. */
#define MLX5_VPMD_DESCS_PER_LOOP 4
+/* Supported RSS */
+#define MLX5_RSS_HF_MASK (~(ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP))
+
#endif /* RTE_PMD_MLX5_DEFS_H_ */
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 6605cfd9f..e0775172c 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -50,6 +50,7 @@
#include <rte_malloc.h>
#include "mlx5.h"
+#include "mlx5_defs.h"
#include "mlx5_prm.h"
/* Define minimal priority for control plane flows. */
@@ -568,9 +569,15 @@ priv_flow_convert_rss_conf(struct priv *priv,
struct mlx5_flow_parse *parser,
const struct rte_eth_rss_conf *rss_conf)
{
- const struct rte_eth_rss_conf *rss =
- rss_conf ? rss_conf : &priv->rss_conf;
+ const struct rte_eth_rss_conf *rss;
+ if (rss_conf) {
+ if (rss_conf->rss_hf & MLX5_RSS_HF_MASK)
+ return EINVAL;
+ rss = rss_conf;
+ } else {
+ rss = &priv->rss_conf;
+ }
if (rss->rss_key_len > 40)
return EINVAL;
parser->rss_conf.rss_key_len = rss->rss_key_len;
diff --git a/drivers/net/mlx5/mlx5_rss.c b/drivers/net/mlx5/mlx5_rss.c
index f4911359b..f47bda667 100644
--- a/drivers/net/mlx5/mlx5_rss.c
+++ b/drivers/net/mlx5/mlx5_rss.c
@@ -51,6 +51,7 @@
#include <rte_ethdev.h>
#include "mlx5.h"
+#include "mlx5_defs.h"
#include "mlx5_rxtx.h"
/**
@@ -72,6 +73,10 @@ mlx5_rss_hash_update(struct rte_eth_dev *dev,
int ret = 0;
priv_lock(priv);
+ if (rss_conf->rss_hf & MLX5_RSS_HF_MASK) {
+ ret = -EINVAL;
+ goto out;
+ }
if (rss_conf->rss_key && rss_conf->rss_key_len) {
priv->rss_conf.rss_key = rte_realloc(priv->rss_conf.rss_key,
rss_conf->rss_key_len, 0);
--
2.11.0
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